Flu vaccines are _ commonly as a shot,which contains killed
Flu vaccines are _ commonly as a shot,which contains killed flu viruses that will cause
will cause the body to make anitbodies to fight off infection by the live flu.
A available B neat C cheerful D well-lit
will cause the body to make anitbodies to fight off infection by the live flu.
A available B neat C cheerful D well-lit
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得了流感是have the flu 还是have a flu
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